Definitely high speed for surface lure work and low speed for jigging.
If you want one reel for both, there are compromises around the 5 ratio and slightly higher.
Also, I think jigging with a high speed reel is really tough both for the rhythm of working the jigging and even more so when you catch a fish. You can though pop with a low speed reel (but it is not ideal), and when you get a fish on a low speed it is actually an advantage. So, my comment would be that a low speed is a better compromise reel than a high speed.